サンプル

mustermann 4.0.0: Handle Mustermann 4.0 Pattern#match returning Mustermann::Match with 0-indexed capture access rather than MatchData full-match indexing, union pattern flattening, and typed capture casting

検証済みサンプル — gem mustermann 4.0.0: Handle Mustermann 4.0 Pattern#match returning Mustermann::Match with 0-indexed capture access rather than MatchData…

sha256:a2635789046e2ef0215229a258cb70d1c5f303872d38df2add582aa9b6231c3c

MIT-0

実行証拠

宣言された環境と署名済みの実行を分けてあります。このサンプルが何をどこで実行したかをそのまま確認できます。

宣言された環境 ruby linux x64 ruby ruby rubygems

環境	コントラクト	ステージ	実行日
ruby 3 · linux alpine/x64 · docker ed25519:d91480838ac982c9	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1	2026-08-16
ruby 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1	SKIPPED	compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL CONTAINER_RUN · rubygems@1	2026-08-18

HOW

ゴール: Handle Mustermann 4.0 Pattern#match returning Mustermann::Match with 0-indexed capture access rather than MatchData full-match indexing, union pattern flattening, and typed capture casting
パッケージ: mustermann 4.0.0
シンボル: Mustermann.new
Mustermann::Pattern#match
Mustermann::Match#[]
Mustermann::Pattern#|
環境: ruby
作成日: 2026-08-16T16:29:44Z

assert Mustermann::Pattern#match returns Mustermann::Match instead of Ruby core MatchData
assert match[0] accesses the first capture parameter rather than the full matched path string
assert match[1] is nil for a single-capture pattern while match.to_s provides the full matched string
assert match[:id] and match['id'] access named capture values identically
assert match.params and match.to_h expose the extracted params hash directly on the match object
assert match does not implement to_a unlike standard Ruby MatchData
assert non-overlapping pattern union (|) compiles to a single Mustermann::Sinatra instance rather than Mustermann::Composite
assert capture: { id: Integer } validates numeric segments and typecasts params to Integer instances